| Abstract |
Available high-field permanent magnets have opened opportunities for axial-flux PM machines, which can find their advantageous application in low-speed high-torque electrical drives. Applications of axial-flux PM motor drives prompt new solutions in designing both the machine and the power converter. In particular, this the paper discusses innovative design criteria which lead to a machine of high efficiency and reduced costs by maximizing the torque/weight ratio. Furthermore, a novel power converter topology is illustrated, considering machine supply requirements which allow an improvement in the drive performance. Finally, the paper presents the characteristics of a low-speed high-torque motor drive, which has been constructed using an IGBT power converter together with a 1.3 kW axial-flux machine having Ne-Fe-B permanent magnets and slotless stator winding wound in a toroidal fashion. |
